Etching a substrate: processes – Nongaseous phase etching of substrate – Etching inorganic substrate
Reexamination Certificate
2006-03-07
2006-03-07
Hassanzadel, P. (Department: 1763)
Etching a substrate: processes
Nongaseous phase etching of substrate
Etching inorganic substrate
C134S003000
Reexamination Certificate
active
07008553
ABSTRACT:
A method for selectively removing an aluminide coating from at least one surface of a metal-based substrate by: (a) contacting the surface of the substrate with at least one stripping composition comprising nitric acid at a temperature less than about 20° C. to degrade the coating without damaging the substrate; and (b) removing the degraded coating without damaging the substrate. Also disclosed is a method for replacing a worn or damaged aluminide coating on at least one surface of a metal-based substrate by selectively removing the coating using the above steps, and then applying a new aluminide coating to the surface of the substrate. Turbine engine parts, such as high-pressure turbine blades, treated using the above methods are also disclosed.
REFERENCES:
patent: 3622391 (1971-11-01), Baldi
patent: 3833414 (1974-09-01), Grisik et al.
patent: 4116723 (1978-09-01), Gell et al.
patent: 4176433 (1979-12-01), Lee et al.
patent: 4282041 (1981-08-01), Cork
patent: 4425185 (1984-01-01), Fishter et al.
patent: 4965095 (1990-10-01), Baldi
patent: 4977036 (1990-12-01), Baldi
patent: 5399313 (1995-03-01), Ross et al.
patent: 5464479 (1995-11-01), Kenton et al.
patent: 5705082 (1998-01-01), Hinson
patent: 5813118 (1998-09-01), Roedl et al.
patent: 5944909 (1999-08-01), Reeves et al.
patent: 5976265 (1999-11-01), Sangeeta et al.
patent: 6174380 (2001-01-01), Rosenzweig et al.
patent: 6267902 (2001-07-01), Cartier et al.
patent: 6328810 (2001-12-01), Conner et al.
patent: 6355116 (2002-03-01), Chen et al.
patent: 2002/0100493 (2002-08-01), Kool et al.
patent: 1 136 593 (2001-09-01), None
patent: 1 525 322 (1978-09-01), None
patent: 1 565 107 (1980-06-01), None
Brooks William Clarke
Pilsner Brian H.
Risbeck James Douglas
Rosenzweig Mark Alan
Worthing, Jr. Richard Roy
Culbert Roberts
Hassanzadel P.
Hasse Donald E.
Hasse & Nesbitt LLC
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